failing electrical components in first generation NSX

failing electrical components in first generation NSX

December 02, 2024

As the first-generation NSX continues to age, failing electronics have become more common.

The most common issues include PGMFI relay, climate control unit, and stereo amplifier unit failure. The typical climate control unit (CCU)  failure symptom is the fan motor only blowing on high and/or the unit no longer powering up. The typical symptom of stereo amplifier failure is popping and/or reduced volume from the speakers. As for the PGMFI relay, no repair program is active and would require replacement of the relay upon failure. 

Lately, new electrical component failures have been reported, including issues with the stereo head unit, instrument cluster, Turn signal cancellation module, and electric power steering control unit.

The failures in the climate control, stereo amplifier, and recently the stereo, instrument cluster, Electric power steering control unit, and turn signal cancellation module are related to the electrolytic compound leaking from the capacitors. This electrolyte can damage the copper traces on the board as well as other components, including processors.

The vast majority of climate control & stereo amplifier circuit boards can be repaired. Repairs typically include repairing the traces on the circuit boards, as well as all components that can cause these types of failures.

ScienceofSpeed offers to repair your unit, or you can take advantage of our core program - where we will send you a core in advance to minimize downtime. For more information on our electronic repairs:

On rare occasion, the damage caused by the capacitors can be too extensive for repair, and ScienceofSpeed will contact you if this is the case. Cars in hot, humid climates appear to be more prone to failure.